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A firecracker shoots up from a hill 150 feet high with an initial speed of 95 feet per second. Using the formula H(t) = −16t2 + vt + s, determine how long it will take the firecracker to hit the ground.

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1. Let's draw a diagram. 2. LEt's make a variables list 3 Find der formulas tu need!
4. Solve it! remember which formulas need to be 'combined'!
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Other answers:

blue bird! go back to your other question! THIS MA TOWN!
oooh wait. this aint physics...
How would i make a variables list?
you just need to find the end points!
I'm confused :o
I thought you only plug in the numbers to the equation but i'm unsure if that's correct or how to do it even if it is correct
v=95 ft/s H(t)=150
solve for s!
wait...what's s? solve for t, silly me
ok but there is also a s!?
I tried to solve but i'm soooo confused
let H(t) = 0 then solve for t
really? shoot. I suck at even trinomials now huh
maybe s is given elsewhere in your textbook
no it isn't :o
@Romero yes please can i have the answer
@lgbasallote wat is s?
i'd like to say it's the distance traveled
Is the answer 7.2 seconds?
dunno. doesnt your txtbook ahve the answer?
no @lgbasallote is the answe 7.2s ?!
i'm doing an online course not from a textbook!
lol shouldnt @NotTim be answering this o.O wait..ill check
i dont wanna do math...
it;s what my calculator said
ok thank you all :)

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